Kautilya's Arthashastra 7.6.25

7.6.25

svadoṣeṇa gatāgato guṇam ubhayoḥ parityajya akāraṇād gatāgataḥ calabuddhir asaṃdheyaḥ //

Whoever runs away owing to his own fault and returns without minding the good nature either of his old or new master is a fickle-minded person having no explanation to account for his conduct, and he should have no terms of reconciliation.